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Commit | Line | Data |
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3863585b WD |
1 | /* |
2 | * (C) Copyright 2001 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
1a459660 | 5 | * SPDX-License-Identifier: GPL-2.0+ |
3863585b WD |
6 | */ |
7 | ||
8 | /* | |
9 | * RTC, Date & Time support: get and set date & time | |
10 | */ | |
11 | #include <common.h> | |
12 | #include <command.h> | |
13 | #include <rtc.h> | |
0dc018ec | 14 | #include <i2c.h> |
3863585b | 15 | |
d87080b7 WD |
16 | DECLARE_GLOBAL_DATA_PTR; |
17 | ||
bdbc1303 | 18 | static const char * const weekdays[] = { |
3863585b WD |
19 | "Sun", "Mon", "Tues", "Wednes", "Thurs", "Fri", "Satur", |
20 | }; | |
21 | ||
2e5167cc | 22 | #ifdef CONFIG_NEEDS_MANUAL_RELOC |
3e38691e | 23 | #define RELOC(a) ((typeof(a))((unsigned long)(a) + gd->reloc_off)) |
2e5167cc WD |
24 | #else |
25 | #define RELOC(a) a | |
521af04d | 26 | #endif |
3e38691e | 27 | |
bdbc1303 | 28 | int mk_date (const char *, struct rtc_time *); |
3863585b | 29 | |
088f1b19 | 30 | static int do_date(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
3863585b WD |
31 | { |
32 | struct rtc_time tm; | |
33 | int rcode = 0; | |
0dc018ec SR |
34 | int old_bus; |
35 | ||
36 | /* switch to correct I2C bus */ | |
37 | old_bus = I2C_GET_BUS(); | |
6d0f6bcf | 38 | I2C_SET_BUS(CONFIG_SYS_RTC_BUS_NUM); |
3863585b WD |
39 | |
40 | switch (argc) { | |
41 | case 2: /* set date & time */ | |
42 | if (strcmp(argv[1],"reset") == 0) { | |
4b9206ed | 43 | puts ("Reset RTC...\n"); |
3863585b WD |
44 | rtc_reset (); |
45 | } else { | |
46 | /* initialize tm with current time */ | |
d1e23194 JCPV |
47 | rcode = rtc_get (&tm); |
48 | ||
49 | if(!rcode) { | |
50 | /* insert new date & time */ | |
51 | if (mk_date (argv[1], &tm) != 0) { | |
52 | puts ("## Bad date format\n"); | |
53 | break; | |
54 | } | |
55 | /* and write to RTC */ | |
56 | rcode = rtc_set (&tm); | |
57 | if(rcode) | |
d52e3e01 | 58 | puts("## Set date failed\n"); |
d1e23194 | 59 | } else { |
d52e3e01 | 60 | puts("## Get date failed\n"); |
3863585b | 61 | } |
3863585b WD |
62 | } |
63 | /* FALL TROUGH */ | |
64 | case 1: /* get date & time */ | |
d1e23194 JCPV |
65 | rcode = rtc_get (&tm); |
66 | ||
67 | if (rcode) { | |
d52e3e01 | 68 | puts("## Get date failed\n"); |
d1e23194 JCPV |
69 | break; |
70 | } | |
3863585b WD |
71 | |
72 | printf ("Date: %4d-%02d-%02d (%sday) Time: %2d:%02d:%02d\n", | |
73 | tm.tm_year, tm.tm_mon, tm.tm_mday, | |
74 | (tm.tm_wday<0 || tm.tm_wday>6) ? | |
3e38691e | 75 | "unknown " : RELOC(weekdays[tm.tm_wday]), |
3863585b WD |
76 | tm.tm_hour, tm.tm_min, tm.tm_sec); |
77 | ||
0dc018ec | 78 | break; |
3863585b | 79 | default: |
4c12eeb8 | 80 | rcode = CMD_RET_USAGE; |
3863585b | 81 | } |
0dc018ec SR |
82 | |
83 | /* switch back to original I2C bus */ | |
84 | I2C_SET_BUS(old_bus); | |
85 | ||
3863585b WD |
86 | return rcode; |
87 | } | |
88 | ||
89 | /* | |
90 | * simple conversion of two-digit string with error checking | |
91 | */ | |
bdbc1303 | 92 | static int cnvrt2 (const char *str, int *valp) |
3863585b WD |
93 | { |
94 | int val; | |
95 | ||
96 | if ((*str < '0') || (*str > '9')) | |
97 | return (-1); | |
98 | ||
99 | val = *str - '0'; | |
100 | ||
101 | ++str; | |
102 | ||
103 | if ((*str < '0') || (*str > '9')) | |
104 | return (-1); | |
105 | ||
106 | *valp = 10 * val + (*str - '0'); | |
107 | ||
108 | return (0); | |
109 | } | |
110 | ||
111 | /* | |
112 | * Convert date string: MMDDhhmm[[CC]YY][.ss] | |
113 | * | |
114 | * Some basic checking for valid values is done, but this will not catch | |
115 | * all possible error conditions. | |
116 | */ | |
bdbc1303 | 117 | int mk_date (const char *datestr, struct rtc_time *tmp) |
3863585b WD |
118 | { |
119 | int len, val; | |
120 | char *ptr; | |
121 | ||
122 | ptr = strchr (datestr,'.'); | |
123 | len = strlen (datestr); | |
124 | ||
125 | /* Set seconds */ | |
126 | if (ptr) { | |
127 | int sec; | |
128 | ||
129 | *ptr++ = '\0'; | |
130 | if ((len - (ptr - datestr)) != 2) | |
131 | return (-1); | |
132 | ||
133 | len = strlen (datestr); | |
134 | ||
135 | if (cnvrt2 (ptr, &sec)) | |
136 | return (-1); | |
137 | ||
138 | tmp->tm_sec = sec; | |
139 | } else { | |
140 | tmp->tm_sec = 0; | |
141 | } | |
142 | ||
143 | if (len == 12) { /* MMDDhhmmCCYY */ | |
144 | int year, century; | |
145 | ||
146 | if (cnvrt2 (datestr+ 8, ¢ury) || | |
147 | cnvrt2 (datestr+10, &year) ) { | |
148 | return (-1); | |
149 | } | |
150 | tmp->tm_year = 100 * century + year; | |
151 | } else if (len == 10) { /* MMDDhhmmYY */ | |
152 | int year, century; | |
153 | ||
154 | century = tmp->tm_year / 100; | |
155 | if (cnvrt2 (datestr+ 8, &year)) | |
156 | return (-1); | |
157 | tmp->tm_year = 100 * century + year; | |
158 | } | |
159 | ||
160 | switch (len) { | |
161 | case 8: /* MMDDhhmm */ | |
162 | /* fall thru */ | |
163 | case 10: /* MMDDhhmmYY */ | |
164 | /* fall thru */ | |
165 | case 12: /* MMDDhhmmCCYY */ | |
166 | if (cnvrt2 (datestr+0, &val) || | |
167 | val > 12) { | |
168 | break; | |
169 | } | |
170 | tmp->tm_mon = val; | |
171 | if (cnvrt2 (datestr+2, &val) || | |
172 | val > ((tmp->tm_mon==2) ? 29 : 31)) { | |
173 | break; | |
174 | } | |
175 | tmp->tm_mday = val; | |
176 | ||
177 | if (cnvrt2 (datestr+4, &val) || | |
178 | val > 23) { | |
179 | break; | |
180 | } | |
181 | tmp->tm_hour = val; | |
182 | ||
183 | if (cnvrt2 (datestr+6, &val) || | |
184 | val > 59) { | |
185 | break; | |
186 | } | |
187 | tmp->tm_min = val; | |
188 | ||
189 | /* calculate day of week */ | |
190 | GregorianDay (tmp); | |
191 | ||
192 | return (0); | |
193 | default: | |
194 | break; | |
195 | } | |
196 | ||
197 | return (-1); | |
198 | } | |
199 | ||
8bde7f77 WD |
200 | /***************************************************/ |
201 | ||
0d498393 WD |
202 | U_BOOT_CMD( |
203 | date, 2, 1, do_date, | |
2fb2604d | 204 | "get/set/reset date & time", |
8bde7f77 WD |
205 | "[MMDDhhmm[[CC]YY][.ss]]\ndate reset\n" |
206 | " - without arguments: print date & time\n" | |
207 | " - with numeric argument: set the system date & time\n" | |
a89c33db | 208 | " - with 'reset' argument: reset the RTC" |
8bde7f77 | 209 | ); |